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MAX1497 - Single-Chip ADCs

General Description

The MAX1497/MAX1499 low-power, 3.5- and 4.5-digit, analog-to-digital converters (ADCs) with integrated lightemitting diode (LED) drivers operate from a single 2.7V to 5.25V power supply.

They include an internal reference, a high-accuracy on-chip oscillator, and a multiplexed LED display driver.

Key Features

  • include data hold and peak detection, overrange and underrange detection, and a user-programmable low-battery monitor. The MAX1499 is available in a 32-pin, 7mm ✕ 7mm TQFP package and the MAX1497 is available in 28-pin SSOP and 28-pin PDIP packages. All devices in this family operate over the -40°C to +85°C extended temperature range. Features o High Resolution MAX1499: 4.5 Digits (±19,999 Count) MAX1497: 3.5 Digits (±1999 Count) o Sigma-Delta ADC Architecture No Integrating Capacitors Required.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX149 +2.7V to +5.25V / Low-Power / 8-Channel / Serial 10-Bit ADCs
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MAX1492 Single-Chip ADCs

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-3054; Rev 0; 11/03 3.5- and 4.5-Digit, Single-Chip ADCs with LED Drivers and µC Interface General Description The MAX1497/MAX1499 low-power, 3.5- and 4.5-digit, analog-to-digital converters (ADCs) with integrated lightemitting diode (LED) drivers operate from a single 2.7V to 5.25V power supply. They include an internal reference, a high-accuracy on-chip oscillator, and a multiplexed LED display driver. An internal charge pump generates the negative supply needed to power the integrated input buffers for single-supply operation. The ADC is configurable for either a ±2V or ±200mV input range and it outputs its conversion results to an LED and/or to a microcontroller (µC). µC communication is possible through an SPI™-/QSPI™-/MICROWIRE™compatible serial interface. The MAX1497 is a 3.